Japanese Standard Color Fastness to Rub Tester(Gakushin)

I. Product Overview

The Japanese Standard Color Fastness to Rub Tester (Gakushin) is a specialized instrument designed to evaluate the colorfastness of textiles to friction and abrasion, adhering to JIS L 0849 (Japanese Industrial Standard). It quantifies color transfer and staining resistance under controlled rubbing conditions, critical for ensuring compliance with Japanese textile quality requirements.

• Type: Abrasion and friction testing device
• Test Standard: JIS L 0849 (Colorfastness to rubbing)
• Key Metrics:
  • Staining Degree (1–5 scale)
  • Color Transfer (ΔE CIELAB)
  • Abrasion Resistance (cycles to failure)
• Sample Size: 100×100mm (adjustable clamping)

II. Technical Specifications

Parameter	Specifications
Rubbing Force	500±10g (programmable via weight system)
Rubbing Speed	60±5 cycles/minute (adjustable)
Abrasion Head	Standard 10mm diameter felt pad (JIS-approved)
Measurement Tools	Digital colorimeter (ΔE accuracy ±0.5)
Test Duration	1–10,000 cycles (auto-stop)
Power Supply	100–240V/50/60Hz, 0.5kW
Dimensi	600×400×800mm (L×W×H)

III. Key Features

• JIS L 0849 Compliance:
  • Simulates real-world friction (e.g., garment rubbing)
  • Standardized felt pad and load system
• Advanced Features:
  • Real-time color difference analysis (ΔE)
  • AI-based staining classification (5 severity levels)
  • Anti-slip clamping mechanism
• Automation:
  • Programmable cycle counter
  • Motorized rubbing head
  • Self-cleaning abrasive pad holder

IV. Compliance Standards

• JIS L 0849 (Colorfastness to rubbing)
• ISO 105-X12 (International colorfastness test)
• AATCC 8 (Durability of colorfastness)
• GB/T 3920 (Chinese textile abrasion standard)

V. Applications

1. Textile Manufacturing: Testing dyed fabrics for consumer goods
2. Quality Control: Batch inspection of apparel and home textiles
3. R&D: Developing fade-resistant dyes and finishes
4. Forensic Analysis: Evaluating wear-induced color degradation

Standard Operation Workflow:

1. Sample Preparation: Cut to size, clamp in test frame
2. Parameter Setup: Select cycle count and rubbing force
3. Testing: Initiate automated rubbing cycles
4. Analysis: Measure color transfer via spectrophotometer
5. Cleaning: Automated pad decontamination

Safety Precautions:

• Avoid contact with moving parts during operation
• Use heat-resistant gloves when handling samples
• Maintain ventilation in testing area

* JIS-certified felt pads and calibration weights * NIST-traceable colorimeter * Energy-efficient low-power motor * Includes 5-year mechanical warranty * Compact design for lab/bench use ​**Technical Highlights**​ - ±0.5 ΔE color measurement accuracy (JIS-compliant) - 10,000-cycle fatigue testing mode - Real-time digital staining grading software - Motorized load adjustment (500g precision) - CE/IECEx certified for safe operation